Question

a sphere has height 4 cm and its csa is 47.1cm*2 find volume ​

Answer 1

Answer:

height of sphere = diameter of sphere

so, radius = 4/2

= 2cm

volume of sphere = 4/3×π×r^3

= 4/3×22/7×2×2×2

= 704/21cm^3

or, 33.52cm^3(approx)

Answer 2

Answer:

CSA=47.1cm

2

πrl=47.1

r=3cm

3.14X3Xl=47.1

l=

3.14X3

47.1

l=5cm

v=

3

1

πXr

2

Xh

h=

(

l

2

−r

2

)

h=

(

5

2

−3

2

)

h=

1

6

h=4cm

V=

3

1

X3.14X3

2

X4

V=37.68cm2